Cloudflare WARP version 2024.9.346.0 Proxy mode issue

Zero Trust WARP
1

What is the name of the domain?

.

What is the error number?

warp-svc[1133809]: WARN run: proxy: Socks greeting failed error=Custom { kind: InvalidData, error: “SOCKS5” }

What is the issue you’re encountering

Cloudflare-warp Proxy mode does not working as a Socks5 server connecting from a firefox browser.

What steps have you taken to resolve the issue?

Downgrade to version 2024.8.458.0

What are the steps to reproduce the issue?

Using Cloudflare-warp app as a local Socks5 proxy server to proxy connections for my browser to the Internet, but when i upgrade the cloudflare-warp app to version 2024.9.346.0 for my Ubuntu 24.04 LTS amd64 PC, i cannot connect to any site. The journal -xe -u warp-svc log continuously show things like "WARN run: proxy: Socks greeting failed error=Custom { kind: InvalidData, error: “SOCKS5” } ".

2

Hi @Vitaly_V,

Is this only happening with Firefox? What if you try a different browser? Have you verified that QUIC is disabled in your browser? WARP modes | Cloudflare WARP client docs

3

There is already a big discussion about it: Cloudflare-warp version 2024.9.346.0 Proxy mode issue

Please, instead of locking old threads, and then throwing docs at the customer, READ the forum, PRIORITIZE widespread issues and get those FIXED

4

The reason why this problem occurred is that the latest version of Cloudflare-Warp 2024.9.346.0 suddenly dropped the support for Proxy DNS over SOCK5, so if unchecked the Proxy over DNS option in FireFox network settings, it will work, but that leads to a very obvious DNS leak in Proxy mode.

1 Like
5

Good insight, thank you for the update! Now im going to stay with the old version for as long as I can. I can’t believe they locked your topic, and now nobody can update the situation, thanks again for helping out. Much userful than @bujangnim’s careless, ignorance response

6

I think the latest version cloudflare-warp_2024.11.309.0 solved the problem, and it works just like a charm on my PC and laptop now.

7

Ah! Very good to know, sounds like I can finally update mine, thanks again for keeping us updated!